1.- Introduction.- 2. Types of human disease by source of the infectious agent.- 3. A history of zoonoses and sapronoses and research into them.- 4. The infection process in zoonoses and sapronoses .- 4.1. Infectious agent.- 4.2. Infection entry.- 4.3. Infection course and host defence.- 5. The epidemic process in zoonoses and sapronoses.- 5.1. Characteristics of the epidemic process.- 5.2. External factors in the epidemic process.- 5.3. Natural focality of diseases.- 5.4. Epidemiological examination in the focus of an infectious disease.- 5.5. Epidemiological surveillance.- 5.6. The control of zoonoses and sapronoses.- 6. Haematophagous arthropods as vectors of diseases.- 6.1. Characteristics of transmission of infections by arthropods.- 6.2. A survey of haematophagous vectors of microbial diseases.- 6.3. A list of microbial agents transmitted by vectors.- 7. Vertebrates as hosts and reservoirs of zoonotic microbial agents.- 7.1. Mammals (Mammalia).- 7.2. Birds (Aves).- 7.3. Reptiles (Reptilia).- 7.4. Amphibians (Amphibia).- 7.5. Fishes (Pisces).- 8. Systematic survey of zoonotic and sapronotic microbial agents.- 8.1. Prions.- 8.2. Viruses.- 8.3. Bacteria.- 8.4. Fungi.- 8.5. Protozoa.- 8.6. Other eucaryotic microorganisms.- 9. Literature.- 10. Index